define(function(require, exports, module) {

	// 添加字符串startWith方法
	String.prototype.startWith = function(str) {

		if (str == null || str == "" || this.length == 0
				|| str.length > this.length)
			return false;

		if (this.substr(0, str.length) == str)
			return true;
		else
			return false;

		return true;
	};

	// 添加字符串endWith方法
	String.prototype.endWith = function(str) {

		if (str == null || str == "" || this.length == 0
				|| str.length > this.length)
			return false;

		if (this.substring(this.length - str.length) == str)
			return true;
		else
			return false;
		return true;
	};

	// 添加字符串replaceAll方法
	String.prototype.replaceAll = function(s1, s2) {
		return this.replace(new RegExp(s1, "gm"), s2);
	};

	// 时间格式化函数
	Date.prototype.format = function(format) {
		var o = {
			"M+" : this.getMonth() + 1, // month
			"d+" : this.getDate(), // day
			"h+" : this.getHours(), // hour
			"m+" : this.getMinutes(), // minute
			"s+" : this.getSeconds(), // second
			"q+" : Math.floor((this.getMonth() + 3) / 3), // quarter
			"S" : this.getMilliseconds()
		// millisecond
		};
		if (/(y+)/.test(format))
			format = format.replace(RegExp.$1, (this.getFullYear() + "")
					.substr(4 - RegExp.$1.length));
		for ( var k in o)
			if (new RegExp("(" + k + ")").test(format))
				format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k]
						: ("00" + o[k]).substr(("" + o[k]).length));
		return format;
	};

	Date.prototype.pattern = function(fmt) {
		var o = {
			"M+" : this.getMonth() + 1, // 月份
			"d+" : this.getDate(), // 日
			"h+" : this.getHours() % 12 == 0 ? 12 : this.getHours() % 12, // 小时
			"H+" : this.getHours(), // 小时
			"m+" : this.getMinutes(), // 分
			"s+" : this.getSeconds(), // 秒
			"q+" : Math.floor((this.getMonth() + 3) / 3), // 季度
			"S" : this.getMilliseconds()
		// 毫秒
		};
		var week = {
			"0" : "日",
			"1" : "一",
			"2" : "二",
			"3" : "三",
			"4" : "四",
			"5" : "五",
			"6" : "六"
		};
		if (/(y+)/.test(fmt)) {
			fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "")
					.substr(4 - RegExp.$1.length));
		}
		if (/(E+)/.test(fmt)) {
			fmt = fmt.replace(RegExp.$1,
					((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "星期"
							: "周") : "")
							+ week[this.getDay() + ""]);
		}
		if (/(e+)/.test(fmt)) {
			fmt = fmt.replace(RegExp.$1,
					((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "星期"
							: "周") : "")
							+ this.getDay());
		}
		for ( var k in o) {
			if (new RegExp("(" + k + ")").test(fmt)) {
				fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k])
						: (("00" + o[k]).substr(("" + o[k]).length)));
			}
		}
		return fmt;
	};

	// 去除空格
	String.prototype.trim = function() {
		var matches = this.match(/^[ \t\n\r]+/);
		var prefixLength = (matches == null) ? 0 : matches[0].length;
		matches = this.match(/[ \t\r\n]+$/);
		var suffixLength = (matches == null) ? 0 : matches[0].length;
		return this.slice(prefixLength, this.length - suffixLength);
	};

});